Cirrus: Fix branch-validation failure

When validating code on a branch, determining a starting commit to check
from isn't as straightforward as it would seem.  Default to using the
SHA from last time CI was green.  If for some reason that isn't
available, use an obviously wrong value to cause an intentional
failure.  Entirely skip this check on tag-push, since determining a
starting point is incredibly difficult to do automatically.

Signed-off-by: Chris Evich <cevich@redhat.com>

0 files changed, 0 insertions, 0 deletions